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MR register handling added in UART service

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This commit is contained in:
Amit Mahajan
2009-11-30 18:26:05 +05:30
parent b9362985e0
commit 438fd780f8
1 changed files with 13 additions and 2 deletions
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15
conts/baremetal/baremetal4/main.c
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@@ -274,6 +274,7 @@ char uart_generic_rx(int devno)
void handle_requests(void) void handle_requests(void)
{ {
u32 mr[MR_UNUSED_TOTAL];
l4id_t senderid; l4id_t senderid;
u32 tag; u32 tag;
int ret; int ret;
@@ -289,6 +290,10 @@ void handle_requests(void)
tag = l4_get_tag(); tag = l4_get_tag();
senderid = l4_get_sender(); senderid = l4_get_sender();
/* Read mrs not used by syslib */
for (int i = 0; i < MR_UNUSED_TOTAL; i++)
mr[i] = read_mr(MR_UNUSED_START + i);
/* /*
* TODO: * TODO:
* *
@@ -300,12 +305,18 @@ void handle_requests(void)
* the request should (currently) come from a task * the request should (currently) come from a task
* inside the current container * inside the current container
*/ */
/*
* FIXME: Right now we are talking to UART1 by default, we need to define protocol
* for sommunication with UART service
*/
switch (tag) { switch (tag) {
case L4_IPC_TAG_UART_SENDCHAR: case L4_IPC_TAG_UART_SENDCHAR:
uart_generic_tx(0, 1); /*FIXME: Fill in */ printf("got L4_IPC_TAG_UART_SENDCHAR with char %d\n ", mr[0]);
uart_generic_tx((char)mr[0], 0);
break; break;
case L4_IPC_TAG_UART_RECVCHAR: case L4_IPC_TAG_UART_RECVCHAR:
uart_generic_rx(1); /* FIXME: Fill in */ mr[0] = (int)uart_generic_rx(0);
break; break;
default: default:
printf("%s: Error received ipc from 0x%x residing " printf("%s: Error received ipc from 0x%x residing "